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Benchmark of available Erlang key-value data structures.
%% Copyright (c) 2016, Grzegorz Junka
%% All rights reserved.
%%
%% Redistribution and use in source and binary forms, with or without
%% modification, are permitted provided that the following conditions are met:
%%
%% * Redistributions of source code must retain the above copyright notice,
%% this list of conditions and the following disclaimer.
%% * Redistributions in binary form must reproduce the above copyright notice,
%% this list of conditions and the following disclaimer in the documentation
%% and/or other materials provided with the distribution.
%%
%% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
%% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
%% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
%% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
%% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
%% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
%% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
%% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
%% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
%% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
%% EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-module(erl_data_bench).
-export([start/0]).
-compile(export_all).
start() ->
Max = 20000,
InitSize = 1000,
Accesses = 30000,
Loops = 3,
Types = [ets, pd, dict, gb_trees, map_get, map_find, map_match, list,
orddict],
Init = [{rand:uniform(Max), X} || X <- lists:seq(1, InitSize)],
Write = [{rand:uniform(Max), X} || X <- lists:seq(1, Accesses)],
Read = [ rand:uniform(Max) || _ <- lists:seq(1, Accesses)],
Tests = [make_funs(X) || X <- Types],
start_loop(Tests, Init, lists:zip(Write, Read), Loops, Tests).
make_funs(X) -> {X, j(init, X), j(save, X), j(read, X), j(size, X), j(drop, X)}.
j(X, Y) -> list_to_atom(atom_to_list(X) ++"_"++ atom_to_list(Y)).
start_loop([], _, _, 0, _) ->
done;
start_loop([], Init, Data, X, Tests) ->
start_loop(Tests, Init, Data, X - 1, Tests);
start_loop([Test | T], Init, Data, Loops, Tests) ->
Pid = self(),
spawn(fun() -> do_test(Pid, Test, Init, Data) end),
receive {Sum, Name, Time, Size} -> report(Sum, Name, Time, Size) end,
start_loop(T, Init, Data, Loops, Tests).
do_test(Pid, {Name, InitF, SaveF, ReadF, SizeF, DropF}, Init, Data) ->
{memory, Empty} = process_info(self(), memory),
Id0 = ?MODULE:InitF(),
Id2 = lists:foldl(fun(X, Id1) -> ?MODULE:SaveF(Id1, X) end, Id0, Init),
Foo = fun(Elem, Acc) -> test_one(Elem, Acc, SaveF, ReadF) end,
{Tc, {Id3, Sum}} = timer:tc(fun() -> lists:foldl(Foo, {Id2, 0}, Data) end),
Pid ! {Sum, Name, Tc, ?MODULE:SizeF(Id3, Empty)},
?MODULE:DropF(Id3).
test_one({Save, Key}, {Id, Hits}, SaveF, ReadF) ->
NId = ?MODULE:SaveF(Id, Save),
case ?MODULE:ReadF(NId, Key) of
true -> {NId, Hits + 1};
false -> {NId, Hits}
end.
report(Hits, OName, OTime, Size) ->
Name = atom_to_list(OName),
Time = integer_to_list(OTime),
Pad1 = lists:duplicate(12 - length(Name), $\s),
Pad2 = lists:duplicate(10 - length(Time), $\s),
Msg = "~B Hits: ~s~sTime:~s~s Size:~B~n",
io:format(Msg, [Hits, Name, Pad1, Time, Pad2, Size]).
init_ets() -> ets:new(my_table, []).
save_ets(Tid, T) -> ets:insert(Tid, T), Tid.
read_ets(Tid, K) -> ets:lookup(Tid, K) =/= [].
size_ets(Tid, E) -> process_size(E)
+ ets:info(Tid, memory) * erlang:system_info(wordsize).
drop_ets(Tid) -> ets:delete(Tid).
init_pd() -> undefined.
save_pd(_, {K, V}) -> put(K, V), undefined.
read_pd(_, K) -> get(K) =/= undefined.
size_pd(_, E) -> process_size(E).
drop_pd(_) -> ok.
init_dict() -> dict:new().
save_dict(D, {K, V}) -> dict:store(K, V, D).
read_dict(D, K) -> dict:find(K, D) =/= error.
size_dict(_, E) -> process_size(E).
drop_dict(_) -> ok.
init_gb_trees() -> gb_trees:empty().
save_gb_trees(G, {K, V}) -> gb_trees:enter(K, V, G).
read_gb_trees(G, K) -> gb_trees:lookup(K, G) =/= none.
size_gb_trees(_, E) -> process_size(E).
drop_gb_trees(_) -> ok.
init_map_get() -> maps:new().
save_map_get(M, {K, V}) -> maps:put(K, V, M).
read_map_get(M, K) -> maps:get(K, M, undefined) =/= undefined.
size_map_get(_, E) -> process_size(E).
drop_map_get(_) -> ok.
init_map_find() -> maps:new().
save_map_find(M, {K, V}) -> maps:put(K, V, M).
read_map_find(M, K) -> maps:find(K, M) =/= error.
size_map_find(_, E) -> process_size(E).
drop_map_find(_) -> ok.
init_map_match() -> #{}.
save_map_match(M, {K, V}) -> M#{K => V}.
read_map_match(M, K) -> case M of #{K := _} -> true; _ -> false end.
size_map_match(_, E) -> process_size(E).
drop_map_match(_) -> ok.
init_list() -> [].
save_list(L, {K, _} = T) -> lists:keystore(K, 1, L, T).
read_list(L, K) -> proplists:get_value(K, L) =/= undefined.
size_list(_, E) -> process_size(E).
drop_list(_) -> ok.
init_orddict() -> orddict:new().
save_orddict(O, {K, V}) -> orddict:store(K, V, O).
read_orddict(O, K) -> orddict:find(K, O) =/= error.
size_orddict(_, E) -> process_size(E).
drop_orddict(_) -> ok.
process_size(Empty) -> element(2, process_info(self(), memory)) - Empty.
-module(erl_data_bench).
-export([start/0]).
-compile(export_all).
start() ->
MaxAccesses = 300000,
Step = 10000,
{ok, Dev} = file:open("erl_data_bench_out.csv", [write, exclusive]),
Pid = spawn(fun() -> collector(Dev) end),
true = register('$write', Pid),
start(Step, MaxAccesses, Step).
collector(Dev) ->
receive
{Pid, stop} ->
file:close(Dev),
Pid ! ok;
{_Count, _Hits, _Name, _Time, _Size} = Msg ->
Args = tuple_to_list(Msg),
file:write(Dev, io_lib:format("~B,~B,~s,~s,~B~n", Args)),
collector(Dev)
end.
start(Max1, Max2, _Step) when Max1 > Max2 ->
'$write' ! {self(), stop},
receive ok -> ok end;
start(Accesses, MaxAcc, Step) ->
Max = 20000,
InitSize = 1000,
%%Accesses = 30000,
%%Loops = 3,
Loops = 1,
Types = [ets, pd, dict, gb_trees, map_get, map_find, map_match],
Init = [{rand:uniform(Max), X} || X <- lists:seq(1, InitSize)],
Write = [{rand:uniform(Max), X} || X <- lists:seq(1, Accesses)],
Read = [ rand:uniform(Max) || _ <- lists:seq(1, Accesses)],
Tests = [make_funs(X) || X <- Types],
start_loop(Accesses, Tests, Init, lists:zip(Write, Read), Loops, Tests),
start(Accesses + Step, MaxAcc, Step).
make_funs(X) -> {X, j(init, X), j(save, X), j(read, X), j(size, X), j(drop, X)}.
j(X, Y) -> list_to_atom(atom_to_list(X) ++"_"++ atom_to_list(Y)).
start_loop(_Count, [], _, _, 0, _) ->
done;
start_loop(Count, [], Init, Data, X, Tests) ->
start_loop(Count, Tests, Init, Data, X - 1, Tests);
start_loop(Count, [Test | T], Init, Data, Loops, Tests) ->
Pid = self(),
spawn(fun() -> do_test(Pid, Test, Init, Data) end),
receive {Sum, Name, Time, Size} -> report(Count, Sum, Name, Time, Size) end,
start_loop(Count, T, Init, Data, Loops, Tests).
do_test(Pid, {Name, InitF, SaveF, ReadF, SizeF, DropF}, Init, Data) ->
{memory, Empty} = process_info(self(), memory),
Id0 = ?MODULE:InitF(),
Id2 = lists:foldl(fun(X, Id1) -> ?MODULE:SaveF(Id1, X) end, Id0, Init),
Foo = fun(Elem, Acc) -> test_one(Elem, Acc, SaveF, ReadF) end,
{Tc, {Id3, Sum}} = timer:tc(fun() -> lists:foldl(Foo, {Id2, 0}, Data) end),
Pid ! {Sum, Name, Tc, ?MODULE:SizeF(Id3, Empty)},
?MODULE:DropF(Id3).
test_one({Save, Key}, {Id, Hits}, SaveF, ReadF) ->
NId = ?MODULE:SaveF(Id, Save),
case ?MODULE:ReadF(NId, Key) of
true -> {NId, Hits + 1};
false -> {NId, Hits}
end.
report(Count, Hits, OName, OTime, Size) ->
Keys = integer_to_list(Count),
Name = atom_to_list(OName),
Time = integer_to_list(OTime),
Pad0 = lists:duplicate(7 - length(Keys), $\s),
Pad1 = lists:duplicate(12 - length(Name), $\s),
Pad2 = lists:duplicate(10 - length(Time), $\s),
Msg = "~B Keys: ~s~B Hits: ~s~sTime:~s~s Size:~B~n",
io:format(Msg, [Count, Pad0, Hits, Name, Pad1, Time, Pad2, Size]),
'$write' ! {Count, Hits, Name, Time, Size}.
init_ets() -> ets:new(my_table, []).
save_ets(Tid, T) -> ets:insert(Tid, T), Tid.
read_ets(Tid, K) -> ets:lookup(Tid, K) =/= [].
size_ets(Tid, E) -> process_size(E)
+ ets:info(Tid, memory) * erlang:system_info(wordsize).
drop_ets(Tid) -> ets:delete(Tid).
init_pd() -> undefined.
save_pd(_, {K, V}) -> put(K, V), undefined.
read_pd(_, K) -> get(K) =/= undefined.
size_pd(_, E) -> process_size(E).
drop_pd(_) -> ok.
init_dict() -> dict:new().
save_dict(D, {K, V}) -> dict:store(K, V, D).
read_dict(D, K) -> dict:find(K, D) =/= error.
size_dict(_, E) -> process_size(E).
drop_dict(_) -> ok.
init_gb_trees() -> gb_trees:empty().
save_gb_trees(G, {K, V}) -> gb_trees:enter(K, V, G).
read_gb_trees(G, K) -> gb_trees:lookup(K, G) =/= none.
size_gb_trees(_, E) -> process_size(E).
drop_gb_trees(_) -> ok.
init_map_get() -> maps:new().
save_map_get(M, {K, V}) -> maps:put(K, V, M).
read_map_get(M, K) -> maps:get(K, M, undefined) =/= undefined.
size_map_get(_, E) -> process_size(E).
drop_map_get(_) -> ok.
init_map_find() -> maps:new().
save_map_find(M, {K, V}) -> maps:put(K, V, M).
read_map_find(M, K) -> maps:find(K, M) =/= error.
size_map_find(_, E) -> process_size(E).
drop_map_find(_) -> ok.
init_map_match() -> #{}.
save_map_match(M, {K, V}) -> M#{K => V}.
read_map_match(M, K) -> case M of #{K := _} -> true; _ -> false end.
size_map_match(_, E) -> process_size(E).
drop_map_match(_) -> ok.
init_list() -> [].
save_list(L, {K, _} = T) -> lists:keystore(K, 1, L, T).
read_list(L, K) -> proplists:get_value(K, L) =/= undefined.
size_list(_, E) -> process_size(E).
drop_list(_) -> ok.
init_orddict() -> orddict:new().
save_orddict(O, {K, V}) -> orddict:store(K, V, O).
read_orddict(O, K) -> orddict:find(K, O) =/= error.
size_orddict(_, E) -> process_size(E).
drop_orddict(_) -> ok.
process_size(Empty) -> element(2, process_info(self(), memory)) - Empty.
25> erl_data_bench:start().
15335 Hits: ets Time:22068 Size:903056
15335 Hits: pd Time:12296 Size:2709360
15335 Hits: dict Time:67726 Size:2174112
15335 Hits: gb_trees Time:77140 Size:2174112
15335 Hits: map_get Time:22862 Size:5091000
15335 Hits: map_find Time:23983 Size:5091000
15335 Hits: map_match Time:20434 Size:5091000
15335 Hits: list Time:19606771 Size:371376
15335 Hits: orddict Time:8952194 Size:371376
15335 Hits: ets Time:23132 Size:903056
15335 Hits: pd Time:12429 Size:2709360
15335 Hits: dict Time:68358 Size:2174112
15335 Hits: gb_trees Time:76733 Size:2174112
15335 Hits: map_get Time:22836 Size:5091000
15335 Hits: map_find Time:24309 Size:5091000
15335 Hits: map_match Time:20607 Size:5091000
15335 Hits: list Time:19578168 Size:371376
15335 Hits: orddict Time:8924476 Size:371376
15335 Hits: ets Time:23600 Size:903056
15335 Hits: pd Time:12503 Size:2709360
15335 Hits: dict Time:68209 Size:2174112
15335 Hits: gb_trees Time:76740 Size:2174112
15335 Hits: map_get Time:22927 Size:5091000
15335 Hits: map_find Time:24028 Size:5091000
15335 Hits: map_match Time:20395 Size:5091000
15335 Hits: list Time:19568900 Size:371376
15335 Hits: orddict Time:8931639 Size:371376
15335 Hits: ets Time:23464 Size:903056
15335 Hits: pd Time:12590 Size:2709360
15335 Hits: dict Time:68061 Size:2174112
15335 Hits: gb_trees Time:76412 Size:2174112
15335 Hits: map_get Time:22952 Size:5091000
15335 Hits: map_find Time:24001 Size:5091000
15335 Hits: map_match Time:20325 Size:5091000
15335 Hits: list Time:19565375 Size:371376
15335 Hits: orddict Time:8924095 Size:371376
done
@wudixiaotie

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wudixiaotie commented Apr 25, 2016

Great test!!

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